VEHICLE MOUNTING TYPE WORKING MACHINE

PROBLEM TO BE SOLVED: To provide a vehicle mounting type working machine in which a hydraulic circuit of an operation liquid to an outrigger provided on a vehicle is simplified as much as possible in the vehicle mounting type working machine in which a hydraulic pump is installed on a rotation body of a rotation device installed on a load-carrying platform. SOLUTION: The rear outriggers 30, 31 are mounted in the expansion/contraction form and the front outriggers 32, 33 are mounted in the non-expansion/contraction form. A common control valve 44 for expansion/contraction is provided on hydraulic cylinders 36, 37 for expansion/contraction. A common vertical control valve 45 is provided on vertical hydraulic cylinders 39-42. A secondary side port of one of the control valves 44, 45 is connected to bottom chambers a, c (rod chambers b, d) of the hydraulic cylinders 36, 37, 39-42 through common circuits 47, 55. A secondary side port of the other of the control valves 44, 45 is connected to the rod chambers b, d (bottom chambers a, c) of the hydraulic cylinders 36, 37, 39-42 through selector valves 49, 50, 59-62. COPYRIGHT: (C)2006,JPO&NCIPI